CAN-Bridge Wiring

[chadconway]

Hi All,
I have watched all the videos and searched this forum extensively. I can't find an answer to which way to wire the CAN Bridge in a 2014+ Nissan Leaf. Is the wires going into the connector (“B” in the image below) the battery side or the vehicle side? Once I get the answer, I'll update this post so that future CAN-Bridge installers don't have this same issue. Thanks!!


Also, I should have pulled the DTCs before doing the swap. So I don't know which are due to the swap and which aren't, but any idea what could be causing this many DTCs after the swap?

 

[coulomb]

any idea what could be causing this many DTCs after the swap?

Too many or not enough terminating resistors on the various CAN bus segments?

 

[Stanton]

There is no way to tell what's what from that data: the "cat is out of the bag" so to speak. Which CAN-bridge are you using?
I have installed Dala's CAN-bridge in my Leaf (referencing his excellent videos--and workmanship)...but this isn't that.

 

[nlspace]

Really what connector is that, and where is it located?
Is it just a junction plug?

 

[chadconway]

This is the connector on the left side of the driver's footwell. This is for installing the CAN-Bridge in a 2014+ Nissan Leaf. @Dala has two videos. The 1st one he shows installing the CAN bridge in the center console for 2011-2013 Leafs. In his second video, he only shows the location of the connection for 2014 and up Leafs. He doesn't identify whether the wires going into the connector are considered the "Vehicle" or "Battery" side.

 

[Dala]

The direction does not matter. Software autodetects it.

But if you really want to know, up is vehicle, down is battery.

 

[Evoto]

Hi All,
I have watched all the videos and searched this forum extensively. I can't find an answer to which way to wire the CAN Bridge in a 2014+ Nissan Leaf. Is the wires going into the connector (“B” in the image below) the battery side or the vehicle side? Once I get the answer, I'll update this post so that future CAN-Bridge installers don't have this same issue. Thanks!!
View attachment 4929

Also, I should have pulled the DTCs before doing the swap. So I don't know which are due to the swap and which aren't, but any idea what could be causing this many DTCs after the swap?
View attachment 4927View attachment 4926

Hi AL THIS IS NOT CORRECT LOCATION FOR YOUR CAN BRIDGE IF YOU NEED ANY HELP CONTACT ME I'LL HELP FOR ANY NISSAN LEAF BATTERY RELATED ERROR

 

[woeful]

The DTC (error codes) U1000 are all because there is something faulty in the CAN bus connections. I wouldn't worry about any of the other codes until those are fixed, since multiple other faults cascade from broken data links.

Faulty or not-connected CAN bridge should be the first thing to check.

Then (with the 12V battery disconnected) every location in a CAN twisted pair should have a resistance between its two wires of about 60 ohms. If 120 ohms, it's cut off from one end of the bus (which has a 120 ohm resistor in the module at each end); if high resistance, it's cut off from both ends; if 40 ohms, there's an extra terminating resistor connected (i.e. the bus has 3 places which believe themselves to be ends).

 

[nshantha]

Hi AL THIS IS NOT CORRECT LOCATION FOR YOUR CAN BRIDGE IF YOU NEED ANY HELP CONTACT ME I'LL HELP FOR ANY NISSAN LEAF BATTERY RELATED ERROR

This is correct location for 2014+ models. I have a Japanese 2014 and I used this location with Dala's CAN Bridge. For power I am using a fuse tap from the fuse box above this location. I am tapping the fuse which supplies continuous 12V to OBD port and many other circuits.

It's been almost 5 months and works fine.